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Hassium (Hs)
Atomic number: 108 · Category: transition metal · Group 8 · Period 7 · Phase: Solid
Hassium is a chemical element with symbol Hs and atomic number 108, named after the German state of Hesse. It is a synthetic element (an element that can be created in a laboratory but is not found in nature) and radioactive; the most stable known isotope, 269Hs, has a half-life of approximately 9.7 seconds, although an unconfirmed metastable state, 277mHs, may have a longer half-life of about 130 seconds. More than 100 atoms of hassium have been synthesized to date.
Block: d
CPK color:#e6002e
Electronic structure
Electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d6
Configuration (semantic): *[Rn] 5f14 6d6 7s2
Shells: 2, 8, 18, 32, 32, 14, 2
Periodic position
Group: 8
Period: 7
xpos: 8
ypos: 7
Spectral/Bohr images
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3D Model